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(3x+7)/4 -x +(5x-4)/7 = 3+(1/2) বা, {7(3x+7) -28x +4(5x-4)}÷28 = 7/2 বা, 21x+49 -28x +20x-16 = (7/2)×28 বা, 13x+33 = 98 বা, 13x = 65 বা, x = 65/13 .'. x = 5
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